HelloFresh
food
SeniorBackendEngineer,MenuPersonalization
Neural analysis suggests this role is
optimal for Senior candidates.
“Senior Backend Engineer, Menu Personalization at HelloFresh. Skills: Golang microservices, Python/FastAPI services, ML operationalization, Event-driven architectures, Cloud & DevOps, Distributed systems. Deliver the core of our personalization engine by engineering high-availability Golang microservices that power real-time recommendations. Build and optimize Python/FastAPI services that rank recipes using ML embeddings and sophisticated multi-objective optimization algorithms”
What You'll Achieve.
Building the digital products that power our end-to-end food experience; Creating the platforms that bring tailored food solutions to millions of customers every day; Help shape scalable, data-driven products used across our markets; Continuously improve how people discover, order, and enjoy HelloFresh’s products; Facilitate the delivery of the backend architecture that powers our personalization engine; Improve systems and enabling long-term scalability
Industry & Context.
What They're Looking For.
Must Have
Long-term (5+ yrs) work experience in backend engineering, with a focus on building distributed systems and microservices, Deep proficiency in Golang and experience with its ecosystem in a production environment, Comfortable reading, understanding, and contributing to Python codebases, Proven track record with event-driven architectures and handling large-scale, heterogeneous datasets, Hands-on experience with cloud infrastructure, container orchestration (Docker), and robust CI/CD pipelines, A foundation in software development best practices, including TDD, clean code, and Git, Experience leveraging Generative AI tools (e. g. , Claude, GitHub Copilot) to accelerate development and improve code quality, Exceptional ability to translate technical architecture into business value for non-technical stakeholders and product partners
Nice to Have
Willing and able to familiarize yourself with Python/FastAPI services, work with data processing libraries, and collaborate with Data Scientists who primarily use Python
What You'll Do.
Deliver the core of our personalization engine by engineering high-availability Golang microservices that power real-time recommendations
Build and optimize Python/FastAPI services that rank recipes using ML embeddings and sophisticated multi-objective optimization algorithms
Partner closely with Data Scientists to translate complex statistical solutions and ML models into production-ready services
Shape the future of our personalization platform by re-architecting legacy components into scalable
event-driven systems that can handle millions of requests globally
Manage the full lifecycle of your services—from experimentation and local development to deployment and monitoring in production
Design and implement the backend infrastructure required to execute A/B tests and measure the impact of new recommendation strategies
How You'll Work.
Team & Collaboration
Collaborating in an autonomous, agile environment alongside Data Scientists and Machine Learning Engineers; Global collaboration at scale; Collaborate with experienced engineers and product partners across HelloTech’s international teams; Provide knowledge sharing and technical guidance to other engineering contributors through code reviews and architectural alignment
Communication Scope
Exceptional ability to translate technical architecture into business value for non-technical stakeholders and product partners
Full Job Description
Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech. HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future. About the role: What's in the Box Do you have a drive for building high-performance, scalable systems and engineering low-latency, resilient services? You will contribute to a high-impact, cross-functional project focusing exclusively on menu personalization, acting as the bridge between sophisticated recommendation algorithms and the millions of customers who use HelloFresh daily. In this capacity, you will provide expert services to design, implement, and improve the robust microservices that serve personalized culinary options across our global markets. Collaborating in an autonomous, agile environment alongside Data Scientists and Machine Learning Engineers, you will facilitate the delivery of the backend architecture that powers our personalization engine. At HelloTech, flexibility and
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